Translation of poligamia

I learned Russian during 8 years in highschool, but since I left school 6 years ago, I have forgotten most of it and did not have opportunity to speak or practice in any way. That's why I am on Vocabulix.
It is good if you have previously practiced only Spanish, which also shows that you are very good at other languages, and still can learn many things. I hope I'll learn it soon and practice.
I have made an internship at a law office, but just for two months. Their salary is really bad. Now to my promise to correct your long message. You need to say: 'On Friday' not 'At Friday'.